X-ray shots of Cygnus X-1

	X-ray shots of Cygnus X-1
	Feng YX(冯育新); Li TB(李惕碚); Feng, YX; Li, TP; Chen, L
刊名	ASTROPHYSICAL JOURNAL
	1999
卷号	514 期号:1 页码:373-382
关键词	accretion, accretion disks stars : individual (Cygnus X-1) X-rays : stars
通讯作者	Inst High Energy Phys, High Energy Astrophys Lab, Beijing 100039, Peoples R China ; Beijing Normal Univ, Dept Astron, Beijing 100875, Peoples R China
英文摘要	X-ray shots of Cyg X-l in different energy bands and spectral states have been studied with proportional counter array (PCA)/Rossi X-Ray Timing Explorer (RXTE) observations. The detailed shot structure is obtained by superposing many shots with 1 ms time bin through aligning their peaks with an improved algorithm. In general, the shots are composed of a slow rise and fast decay. The shot structures in the different states are different. The duration of a shot in the high state is shorter than that in the low and transition states. The shot profile in the high-energy band is more asymmetric and narrower than that in the low-energy band. The average hardness of a shot is lower than that of steady emission in the transition and low states but higher than that in the high state. The time lags between the shots in higher and lower energy bands have been found in the different states. In transition states, the time lag is largest among the different states of Cyg X-l, and it is smallest in the low state. The implications of the observed shot features for shot models are discussed.
学科主题	Astronomy & Astrophysics
类目[WOS]	Astronomy & Astrophysics
研究领域[WOS]	Astronomy & Astrophysics
原文出处	SCI
语种	英语
WOS记录号	WOS:000080057000030
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/237213]
专题	高能物理研究所_院士高能物理研究所_理论物理室高能物理研究所_多学科研究中心
作者单位	中国科学院高能物理研究所
推荐引用方式 GB/T 7714	Feng YX,Li TB,Feng, YX,et al. X-ray shots of Cygnus X-1[J]. ASTROPHYSICAL JOURNAL,1999,514(1):373-382.
APA	冯育新,李惕碚,Feng, YX,Li, TP,&Chen, L.(1999).X-ray shots of Cygnus X-1.ASTROPHYSICAL JOURNAL,514(1),373-382.
MLA	冯育新,et al."X-ray shots of Cygnus X-1".ASTROPHYSICAL JOURNAL 514.1(1999):373-382.